On Feb 20, 11:43*am, Darryl Ramm wrote:
On Feb 20, 9:10*am, kd6veb wrote:

Hi Gang
* This thread prompted me to think as to how the MXR unit ignores my
transponder in my glider which is being pinged regularly where I fly?
Explanation anyone or a pointer to where I could find an answer to my
question? Thanks.
Dave

Dave RTFM! This is described in the manual. The MRX uses its internal
altimeter to compare to the Mode C altitude tramitted by an
transponder. If the values are close it assumes it is your transponder
it is seeing and supresses the alert. *The exact logic/tollerances it
uses however is not described.

Darryl

I don't own one of these yet, but I just have to ask this question.

Are you saying if a target is at the same altitude as you, it will be
suppressed? That is a scary thought! I would think the horizontal
proximity would also be part of the suppression criteria.